Improved mode of suefaodtq sheet-ibon and metal plates



tar- 1m Hm t ase-PM N4. 71,111, dated A 21, 1868 msnovnn MODE" or sosnomessm xson AND METAL PLATES;-

fliig: firythnlfizttrrth is iii his: i i hrs gstmt 'mih making gm of the some;

TO ADL WHOM IT MAY 0030mm i v I w r I I Be. it knoti'n thhtl, TnmiA-S SHAW, of the city-ond' county of Philadelphia, Pennsylvania, hzwe'ihvented o, new and improved Method of S riaeing Iron and Steel; and I hereby declare thefoilowingto he 5 full, elem,

end exzict descriptioii of the some, reference being-had to theo'ccomponying' samples 3 1 V My invention consists iuthe application of eor'bon to the surface of iron or steel, duringlthepmoess' of hot soiling; wet-hw-iboni i xlationwqu'iring'hez t. 4

otherwise manipulated np'op, sebstantiaily as and for the purpose set forthu v The object is to prevent th'e ropid eorro sion of iro jn in the air whii'st heated, und toeid broducing' a smooth mi'rfnoe onan {wrought i ron.-

" In order toenahle others to tee and pfactise myihvention, Ihwill proceed to describe its mode of operation.

The materiel a-pialied to the iron consists of p'lh'hlbago, imimal fat, soda iand watexj'the'yeluehleconstitueht of which is the plhmhhgo. I v v The material con b e applied to the heated e i'foee of uietal by dropping or subbing it upon i olie thiough I which the metal has to' pass else by rubbing .it upon the heated surface of the metal withe. mop ada'pted to the configuration of'the iron. I It will be observed that carbon can he employed in combination with various other mategials I thoreforedo not wish to confine myself to the'maiteriuls in combination with the carbon, hut What I do claim, and desire to secure by Letters Patent, js-' The applicatioh of fiarhonaceous material to the heated'surfaces of iron and steel, '\v-hilst being rolled or THOMAS" SHAW. [L. 5.] Witnesses:

' E. Conn,

Emss S. SHAW- 

